Houttuynia cordata Thunb, a first-class carcinogenic Chinese medicine, is the name of Chinese medicine. Some people are eager to love it, and some people avoid it, but it keeps coming out that Houttuynia cordata Thunb will cause cancer, but I'll show you the truth. Houttuynia cordata Thunb, a first-class carcinogenic Chinese medicine.
Houttuynia cordata Thunb. 1 1. Does Houttuynia cordata Thunb. hurt the kidney and cause cancer? Fake!
In 2003, the Taiwan research team analyzed the genes of 98 patients with liver cancer, and found that nearly 80% of them had the unique genetic mutation fingerprints of aristolochic acid. As a result, the researchers analyzed that aristolochic acid was one of the reasons for the high incidence of liver cancer in Asia.
In addition, a set of data in China Journal of Food Industry is even more alarming. There are 78% carriers of aristolochic acid-related genes in Taiwan Province. 47% in mainland China; The value in Europe and America is low, only 5%, which has distinct regional characteristics. Experts judge that this is one of the reasons for the large number of liver cancer in China.
All these data show that aristolochic acid has carcinogenic effect, and the harm of aristolochic acid is certain, and it is also the murderer who hurts the kidney. However, this primary carcinogen aristolochic acid is different from that in Houttuynia cordata Thunb. Aristolochic acid I is carcinogenic, while Houttuynia cordata Thunb contains BII, AII and FII, so it can be said that there is no "half-money relationship". At present, there is no evidence that these aristolochic acids in Houttuynia cordata have carcinogenic effects.
To sum up, the statement that Houttuynia cordata will cause cancer is wrong from the starting point. Take a substance that does not exist in Houttuynia cordata as a carcinogen, and the blame is not so bad. Houttuynia cordata Thunb does not cause cancer, but it may have certain anticancer potential!
Second, new research: Houttuynia cordata Thunb may have anticancer potential.
MDPI Cancer Research Association has done a study to analyze the effects of Houttuynia cordata extract and ethyl acetate component (EA) on the occurrence of prostate cancer and its resistance to prostate.
The results showed that Houttuynia cordata Thunb. extract and EA could activate caspase and down-regulate androgen receptor, which induced the death of androgen-sensitive prostate cancer cells and CRPC cells.
The researchers also conducted experiments on rats, and also found that Houttuynia cordata extract had a certain inhibitory effect on the occurrence of prostate. It should be noted that this is the function of Houttuynia cordata extract, and it is not that eating Houttuynia cordata will fight cancer. We need to treat this matter rationally. It is unrealistic to rely on a single food to play an anti-cancer role. Three, often eat houttuynia cordata, these benefits can be seen.
Zhang Ye, a former nutritionist in 309 Hospital of China People's Liberation Army, pointed out in an interview that these two substances in Houttuynia cordata Thunb are very beneficial to health.
1, houttuynin:
Houttuynia cordata Thunb has a strong antibacterial effect. Generally, substances with antibacterial effect will not have antiviral effect. But houttuynia cordata Thunb has both, so houttuynia cordata Thunb has a strong anti-inflammatory effect.
2, rich in potassium:
After natural potassium intake, the absorption rate of the body is very high. Potassium can strengthen muscles, improve myocardial contraction function, and enhance basal metabolic rate, which makes the body excited. For patients with hypertension and coronary heart disease, taking more potassium is very beneficial to disease control.
Houttuynia cordata can be selected from everyone's "blacklist", and we should pay more attention to these foods in daily life!
Fourth, we should really pay attention to these kinds of traditional Chinese medicines that hurt the kidney.
1, traditional Chinese medicine containing aristolochic acid:
Aristolochiaceae plants such as Aristolochia and Asarum contain aristolochic acid components, such as Aristolochia, Sinomenium fortunei, Aristolochia mollissima and Stephania tetrandra.
2. Some plant Chinese medicines
Tripterygium wilfordii, Radix Aconiti Kusnezoffii, Akebia Akebia, Cortex Meliae, Trichosanthis Radix, Petunia, Croton, Aloe Vera, Dafengzi, etc.
3. Some animal Chinese medicines
Fish gall, centipede, mylabris and snake venom.
4. Mineral Chinese medicine containing arsenic, mercury and lead.
Lead powder, lead, realgar, mercury, alum, etc.
Yan Yuehong, director of the Department of Nephrology of the Fifth Affiliated Hospital of Guangzhou Medical University, pointed out that most of the kidney injuries caused by traditional Chinese medicine are caused by the abuse of traditional Chinese medicine, especially listening to the so-called "folk prescription" and "secret recipe" will greatly increase the risk of drug-induced kidney injuries, so we must be cautious in taking traditional Chinese medicine every day. If you have polyuria, oliguria, edema, fever, nausea and vomiting after taking Chinese medicine, you must seek medical treatment in time.
Traditional Chinese medicine is a treasure left by Chinese culture for thousands of years. The premise of producing efficacy is to treat it according to syndrome differentiation and correct processing, not to buy it at will! Abuse of drugs can easily lead to liver and kidney damage and bring some irreversible harm to the body.
Physiological characteristics of Houttuynia cordata Thunb. 2, a primary carcinogen.
Water shield, a perennial herb, is 15-50cm high and has a foul smell. The lower part of the stem is prostrate, rooted and the upper part is upright. Leaves alternate, heart-shaped or broadly ovate, 3-8cm long and 4-6cm wide, apex acuminate, entire, with fine glandular spots, pilose veins and purplish red below; The petiole is 3-5 cm long; Stipules are strip-shaped, and the lower half is combined with petiole to form a sheath. Spikes are born at the top of the stem, opposite to the leaves, and there are 4 white petal-shaped bracts at the base; Flowers are small, without perianth, with linear bracts; Stamens 3, the lower part of filament is connate with ovary; Carpels 3, connate at lower part. The capsule is ovoid and cracked at the top. The flowering period is May-August, and the fruiting period is July 7- 10/October. Born in mountainous areas, ditches, ponds, ridges or forests.
Origin:
Produced in Jiangsu, Zhejiang, Jiangxi, Anhui, Sichuan, Yunnan, Guizhou, Guangdong, Guangxi, etc.
Medicine site:
Fresh whole grass or dry aerial parts of Saururaceae.
Processing method:
Fresh houttuynia cordata Thunb. removes impurities. Remove impurities from dried Herba Houttuyniae, wash quickly, cut into sections, and dry.
This product is an irregular segment. The stem is oblate, with reddish-brown to yellowish-brown surface and longitudinal edges. The leaves are mostly broken, yellowish brown to dark brown. Spike yellow-brown. Crushed with fishy smell and astringent taste.
Sexual taste:
Pungent, slightly cold.
Meridian tropism:
Return to lung meridian.
Efficacy:
Clearing away heat and toxic materials, eliminating carbuncle and discharging pus, and promoting diuresis and stranguria.
Indications:
Lung abscess with pus, phlegm-heat asthma and cough, heat dysentery, heat stranguria, carbuncle swelling and sore poison.
Related compatibility:
1 Exogenous wind-cold, phlegm-heat, asthma and cough: with mulberry bark, scutellaria baicalensis, etc.
2 lung abscess and pus: used alone or with winter melon seeds, peach kernels, fresh reed roots, platycodon grandiflorum, licorice, etc.
3 hemorrhoid pain: decoction fumigation.
Usage and dosage:
15-25g, which should not be fried for a long time; Double the dosage of fresh food, and take it by decocting in water or pounding juice. Appropriate amount is applied externally, and it is pounded or decocted to fumigate and wash the affected area.
Caution for use:
Water shield is cold, and anyone who belongs to spleen and stomach deficiency cold or deficiency cold syndrome is forbidden to eat.
Houttuynia cordata Thunb., a first-class cancer-causing Chinese medicine, Part 3: Propagation methods
There are usually three propagation modes of Houttuynia cordata Thunb., namely, ramet propagation, cuttings propagation and rhizome propagation, and the propagation materials are usually taken from wild strong local plants without pests and diseases.
1, ramet propagation: prepare the seedbed with sandy loam texture, dig out the mother plant from late March to April for transplanting, or directly transplant it.
2. Rhizome propagation: In February and March, white, thick and disease-free rhizomes are selected, cut into small segments with about 2 axillary buds and planted in seedbeds.
3. Cutting propagation: in spring and summer, the branches without plant diseases and insect pests are cut into cuttings with the length of about 12 to 15cm, and then the cuttings are planted in the soil bed, and the plant and row spacing are 10cm* 16cm or10cm */kloc. No matter which breeding method is adopted, attention should be paid to the anti-freezing and heat preservation work in winter and early spring, and shading and moisturizing are needed in summer and early autumn.
Second, the cultivation techniques
Planting houttuynia cordata has a faster harvest. The mountainous areas in the south of Shaanxi Province can be harvested in batches after three months of planting, and can be harvested all year round, or planted and harvested in off-season. Because the plants naturally have fishy smell, diseases and pests are rarely found during the growth period, and they are pollution-free and pollution-free vegetables, which are very popular in the market and have high benefits. The output of Houttuynia cordata Thunb is about 45t/hm2, and the price is 4 to 10 yuan /kg.
1, soil preparation and planting
Houttuynia cordata Thunb can be planted all year round, but the best time for sowing is around beginning of spring. Those planted in spring, early summer and winter can be harvested in the same year. The cultivation of Houttuynia cordata Thunb. needs to choose the land with natural shade (semi-shade and semi-sunshine), loose soil texture and fertile soil, and apply 45-60t/hm2 of farm soil miscellaneous fertilizer as base fertilizer. Trenches with a depth of 8 to 10cm and a width of about 13 to 15cm are opened on the seedbed in the same direction, and the row spacing is 20 to 25cm. The head and tail of the seed roots are connected and placed in the trenches continuously, and two rows are placed in parallel in each trench, and the spacing between the seed stem segments is about 5 to 8cm. Planting in high temperature season in summer, in order to ensure a good survival rate, it is usually required to have three nodes; Planting before winter, in order to ensure normal growth and development, requires covering with plastic film or newspapers.
2. Daily management
The first is water management. After planting, the seedling stage encounters drought, so it is necessary to water it early and late to moisten the border soil; Water needs to be watered in a timely manner in the dry season and drained in a timely manner in rainy days to prevent long-term water accumulation in the seedbed. The second is the management of fertilizer. Before the seedlings survive to the closure, intertillage, weeding and topdressing should be carried out for 2 to 3 times. The fertilizer should be mainly nitrogen fertilizer, with topdressing 20 to 30g/m 2, diluted first and then concentrated; Topdressing nitrogen fertilizer after each harvest can promote plant germination; After harvesting in autumn, topdressing with phosphorus and potassium fertilizer, and at the same time, cultivating soil. The third point is weed control and plant coring. If weeds are found, they need to be removed in time, shallow intertillage and scarification should be carried out at the right time, and the plants whose stems and leaves grow too vigorously on the ground need to be topped to inhibit their excessive growth and promote the emergence of side branches. The fourth point is timely coverage. Pay attention to covering plastic greenhouses or arch sheds in winter, and pay attention to shading in summer to prevent direct sunlight.
3. Harvest and sales
Choose the right time to harvest according to the variety. The tender stems and leaves can be harvested when the seedling height is 8 to 10cm after planting, and then harvested every 10 to 20 days/time.